Abstract
To do large-scale quantum information processing, it is necessary to
control the interactions between individual qubits while retaining quantum
coherence. To this end, superconducting circuits allow for a high degree of
flexibility. We report on the time-domain tunable coupling of optimally biased
superconducting flux qubits. By modulating the nonlinear inductance of an
additional coupling element, we parametrically induced a two-qubit transition
that was otherwise forbidden. We observed an on/off coupling ratio of 19 and
were able to demonstrate a simple quantum protocol.
| Original language | English |
|---|---|
| Pages (from-to) | 723-726 |
| Journal | Science |
| Volume | 316 |
| Issue number | 5825 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |